.div_img{
    position: absolute;
    left: 0;
    top: 0;
    z-index: 10;
    width: 100%;
    height: 100%;
}

img{
    width: 100%;
    height: 100%;
}

.div_form{
    position: absolute;
    left: calc(50% - 200px);
    top: calc(50% - 150px);
    border: 1px red;
    background-color: rgba(0,0,0,0.2);
    width: 400px;
    height: 320px;
    border-radius: 8px;
    z-index: 1000;
}

.div-foot{
    position: absolute;
    left: calc(50% - 370px);
    top: calc(100% - 30px);
    width: 800px;
    height: 20px;
    z-index: 1000;
    vertical-align: bottom;
}

form{
    position: absolute;
    width: 350px;
    height: 300px;
    left: 20px;
    top: 25px;
    padding: 5px;

}

/** 欢迎 样式*/
.span_welcome{
    margin-top: 20px;
    font-size: 35px;
    font-family:bolder, "微软雅黑", cursive;
    color: #FFFFFF;
}


.div_welcome_1{
    margin-top: 20px;
    margin-left: 20px;
    margin-right: 10px;
    font-size: 35px;
    font-family:Serif, "黑体", cursive;
    color: #FFFFFF;
}

/** 库房管理系统 样式*/
.span_chinese{
    font-size: 30px;
    font-family:bolder, "宋体", cursive;
    color: #FFFFFF;
}

/** Archives Management System 样式*/
.span_english{
    color: white;
    font-family:bolder, "Consolas", cursive;
}


.div_input{
    margin-top: 10px;
}

.div_input_1{
    margin-top: 30px;
}

.layui-input{
    border-radius: 5px;
    border: 2px gainsboro;

}

.checkCode{
    width: 160px;
}

.a_checkCOde{
    display: block;
    border-color: black;
}

.div_checkCode{
    margin-left: 165px;
    margin-top: -40px;
    width: 110px;
    height: 40px;
    background-color: red;
    text-align: center;
    border-radius: 5px;
}

.span_checkCode{
    line-height: 40px;
    font-size: 25px;
    font-family: bolder, "Arial Black", cursive;
    color: white;
}

.btn_login{
    background-color: 	#4E6EF2;
    border-radius: 5px;
    width: 350px;
    font-size: 16px;
}

.img-login{
    width: 20px;
    height: 20px;
}

.div-foot-chinese{
    color: white;
    font-size: 15px;
    font-family:Serif, "宋体", cursive;
}

.div-foot-chinese_1{
    margin-left: 20px;
    color: white;
    font-size: 15px;
    font-family:Serif, "宋体", cursive;
}